20180103, 07:13  #287  
Romulan Interpreter
Jun 2011
Thailand
8,741 Posts 
Quote:
(sorry, I am far behind with the reading and news due to the winter holidays..., but I am catching up) 

20180103, 07:18  #288  
Romulan Interpreter
Jun 2011
Thailand
21045_{8} Posts 
Quote:


20180103, 07:39  #289 
Romulan Interpreter
Jun 2011
Thailand
21045_{8} Posts 

20180103, 08:15  #290 
Jun 2015
Vallejo, CA/.
31^{2} Posts 

20180103, 08:57  #291 
"Jeppe"
Jan 2016
Denmark
5×31 Posts 
Another thing that can be a bit confusing, is that sometimes \(M_n\) is used to mean \(2^n  1\), while at other times it is used to mean the \(n\)th entry in the sorted vector \((2^21,2^31,2^51,2^71,2^{13}1,\ldots )\) of all existing Mersenne primes, and sometimes it is meant to mean the \(n\)th entry in the list of currently known primes, sorted by either size or discovery date.
When I saw \(M_3\), I thought of \(7\), not \(31\). /JeppeSN Last fiddled with by JeppeSN on 20180103 at 08:59 
20180103, 09:36  #292  
Jun 2015
Vallejo, CA/.
31^{2} Posts 
Quote:


20180103, 09:51  #293 
"Adolf"
Nov 2013
South Africa
61 Posts 
Following this while on lazy holiday was quite exciting.
But did I miss something? M51 also discovered? 
20180103, 11:04  #294 
Banned
"Luigi"
Aug 2002
Team Italia
2×2,383 Posts 

20180103, 13:23  #295 
Dec 2002
5×157 Posts 

20180103, 14:01  #296  
Sep 2003
5024_{8} Posts 
Quote:


20180103, 14:17  #297  
"Nuri, the dragon :P"
Jul 2016
Good old Germany
2·367 Posts 
Quote:


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